the branch of quantum physics that accounts for matter at the atomic level; an extension of statistical mechanics based on quantum theory (especially the Pauli exclusion principle)
the activity of operating something (a machine or business etc.); "her smooth operation of the vehicle gave us a surprisingly comfortable ride"
a planned activity involving many people performing various actions; "they organized a rescue operation"; "the biggest police operation in French history"; "running a restaurant is quite an operation"; "consolidate the companies various operations"
a process or series of acts especially of a practical or mechanical nature involved in a particular form of work; "the operations in building a house"; "certain machine tool operations"
a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body; "they will schedule the operation as soon as an operating room is available"; "he died while undergoing surgery"
activity by a military or naval force (as a maneuver or campaign); "it was a joint operation of the navy and air force"
a business especially one run on a large scale; "a large-scale farming operation"; "a multinational operation"; "they paid taxes on every stage of the operation"; "they had to consolidate their operations"
(computer science) data processing in which the result is completely specified by a rule (especially the processing that results from a single instruction); "it can perform millions of operations per second"
process or manner of functioning or operating; "the power of its engine determine its operation"; "the plane's operation in high winds"; "they compared the cooking performance of each oven"; "the jet's performance conformed to high standards"
the state of being in effect or being operative; "that rule is no longer in operation"
shopping at a market; "does the weekly marketing at the supermarket"
the commercial processes involved in promoting and selling and distributing a product or service; "most companies have a manager in charge of marketing"
the act or process of drawing up plans or layouts for some project or enterprise
an act of formulating a program for a definite course of action; "the planning was more fun than the trip itself"
the cognitive process of thinking about what you will do in the event of something happening; "his planning for retirement was hindered by several uncertainties"
an overland journey by hunters (especially in Africa)
a series of actions advancing a principle or tending toward a particular end; "he supported populist campaigns"; "they worked in the cause of world peace"; "the team was ready for a drive toward the pennant"; "the movement to end slavery"; "contributed to the war effort"
several related operations aimed at achieving a particular goal (usually within geographical and temporal constraints)
go on a campaign; go off to war
run, stand, or compete for an office or a position; "Who's running for treasurer this year?"